Bedstead.



J. A. KEMMLER'.

BEDSTEAD.

APPLICATION FILED B12026, 1911,

Patented July 22, 1913.

HY EE m N T R v fl A W/ b MH 3% QM M 3 5 E I 8 w d 6 0, m w QM I 1 w KUNITED STATES OFFICE.

QQI IN A. KEMMLER, OF PHILADELPHIA. PENNSYLVANIA. ASSIGNOR OF ONE-HALFTO OTTO KLOPFER, OF PHILADELPHIA. PENNSYLVANIA.

BEDSTEAD.

Specification of Letters Patent.

Patented July 22, 151 3.

Original application filed October 8. 19 10, Serial No. 585.986. Dividedand this application filed December 6, 1911. Serial No. 664.228.

To all whom it may concern Be it known that t. Jons i l-).\l.\lI.F.lt. acitizen of the United States, residing in Philadelphia. Peunsylvmiia.have invented certain improvements in Bedsteads. (the same being adivision of my application. Serial No. 585.986. tiled October 1910i ofwhich the following is a specification.

My invention consists of a bed bottom es pecially'adapted for use inconnection with invalid beds and so designed as to provide an elasticsupport for all portions of the mattress resting upon it. to permitready lateral movement of the mattress onto or from it. and to providefor the ready lifting of eith r end of the mattress independent of theother.

in the accompanying dra\ving--Figure l s a perspective view of a bedbottom convstructcd in accordance with my inventirn: Fig. 2 is a centrallongitudinal section of the same, and Fig. 3 is a transverse section ontheline re a. Fig. 2.

The base frame of the bed bottom consists of longitudinal side bars I3which are connected by transverse bars H. said longitudinal bars havinglugs 15 upon which normalty rest the side bars 16 of the mattresssupporting frame. said side bars 16 being connected by transverse bars17. The mattress frame is divided into head and footsections. the sidebars of each. section being pivoted to upwardly projecting lugs 19 onthe side bars 13 of the base frame, as shown in Fig. i. so that eitherhead or foot section can have an upward inclination imparted to it whenit is desired to raise either the head or the feet, or both. of theoccupant of the bed. Such raising movement is elt'ected by arms '30 andshafts 21. as shown in Fig. 2. the arms acting on the under sides of theside bars H; of the mattress carr \'iug frame. as shown in Fig. 3. andthe shafts being adapted to hearings in the lugs 17 on the bars 13. oneend of each shaft being coir structed for the reception of a suitablecrank whereby it may be turned so as to raise or lower the arms 20. Eachshaft is provided with a ratchet wheel 22. with which engages a pawl 21to prevent the. descent of the arms 20 after they have been raised, thepawl being released from engagement with the ratchet wheel when it isdesired to lower the arms. Other means of operating the arms 90 may.however. be adopted without departing from my invention.

The mattress supporting structure of the bed bottom consists of a numberof endle s belts or bands 25 of rubber. spring steel. or other elasticmaterial. these endless beits or hands passing around shafts 26. one ateach side of the mattress carrying frame and these shafts being free toturn in brackets 27- on the side frames 16. .\n elastic support is thusprovided for every part of the mattress and the latter is free to yieldto pressure at any point without corresponding depression of any otherportion of the mattress. 'lhe mattress can also be readily applied to orremoved from the bed bottom by slipping it sidewise onto or from thesame. the endless belts or hands J moving with the mattress and causingrotation of the shafts 26. By this means the mattre s with the patientupon it can be readily applied to or removed from the bed and thepatient can be transferred from place to place while lying upon themattress and with the mininnun of disturbance.

I claim:

1. The combination. in a bed bottom. of a mattress support consisting ofa frame having shafts at opposite sides. and a plurality of narrow.endless. elastic bands passing around said shafts and also free to movearound the same. i

2. The combination, in a bed bottom. of a base frame. a two-partmattress carrying frame pivotally mounted on said bane frame and eachpart carrying opposite side shafts. and a plurality of narrow. endless.elastic bands passing around said shafts. arms upon which the free endsof the mattress carrying frames rest, and transverse shafts whereby saidarms may be indepentlcntly operated.

In testimony whereof. I have s gned my name to this specification. inthe presence of two subscribing witnesses.

JOHN Kl lftlalld'llt.

\V itnesses:

Kx'rn A. BI-ZADLE, ll.\ HILTON D. Tl nxnn.

